In these years, the shortages of water has become a ______ problem.
| A．global | B．historical | C．chemical | D．local |
Mothers holding jobs outside the home should have ______ schedules to make it easier to care for their children.
| A．heavy | B．smooth | C．flexible | D．complex |
Those who suffer from headache will find they get ______ from this medicine.
| A．relief | B．safety | C．defense | D．shelter |
Your house is always so neat --- how do you ______ it with three children?
| A．manage | B．serve | C．adapt | D．construct |
The living room is clean and tidy, with a dining table already ______ for a meal to be cooked.
| A．laid | B．laying | C．to lay | D．being laid |
Sam ______ some knowledge of the computer just by watching others working on it.
| A．brought up | B．looked up | C．picked up | D．set up |